ObjFW  Artifact [32aeed25c0]

Artifact 32aeed25c045eed7caee3681d2d67e086491a3a0bdaef8da72439b01d63947eb:

• File src/OFRecursiveMutex.m — part of check-in [48980f2297] at 2015-11-29 11:43:05 on branch trunk — Make properties a requirement and clean up code

  This increases the required GCC version from 4.0 to 4.6 (exception:
  Apple GCC, which already supports this with >= 4.0 starting with OS X
  10.5). Since even GCC 4.6 is really old by now, there is no point in
  still supporting something even older and making the code ugly because
  of that. While some hardware and OS support was dropped from GCC 4.6
  compared to GCC 4.0, there is nothing in there that would be an
  interesting target with the exception of BeOS maybe - but a port to BeOS
  can also be achieved using the Haiku support. The other dropped OSes are
  mostly old versions of OSes while newer ones are still being supported
  (and those newer versions of those OSes still support the same
  hardware). (user: js, size: 1760) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFRecursiveMutex.h"
#import "OFString.h"

#import "OFInitializationFailedException.h"
#import "OFLockFailedException.h"
#import "OFStillLockedException.h"
#import "OFUnlockFailedException.h"

@implementation OFRecursiveMutex
@synthesize name = _name;

+ (instancetype)mutex
{
	return [[[self alloc] init] autorelease];
}

- init
{
	self = [super init];

	if (!of_rmutex_new(&_rmutex)) {
		Class c = [self class];
		[self release];
		@throw [OFInitializationFailedException exceptionWithClass: c];
	}

	_initialized = true;

	return self;
}

- (void)dealloc
{
	if (_initialized)
		if (!of_rmutex_free(&_rmutex))
			@throw [OFStillLockedException exceptionWithLock: self];

	[_name release];

	[super dealloc];
}

- (void)lock
{
	if (!of_rmutex_lock(&_rmutex))
		@throw [OFLockFailedException exceptionWithLock: self];
}

- (bool)tryLock
{
	return of_rmutex_trylock(&_rmutex);
}

- (void)unlock
{
	if (!of_rmutex_unlock(&_rmutex))
		@throw [OFUnlockFailedException exceptionWithLock: self];
}

- (OFString*)description
{
	if (_name == nil)
		return [super description];

	return [OFString stringWithFormat: @"<%@: %@>",
					   [self className], _name];
}
@end